The document requests the creation of AES 128 encryption and decryption code for Arduino C. It specifies three cases: encoding and decoding the word 'conversation', connecting Arduino to a computer for file encryption and decryption, and handling password encryption and decryption. The request emphasizes error-free implementation for each scenario.

1. Write an AES 128 code that encrypts and decrypts the following
Provided that it works on Arduino C and is free of errors, and a separate code is written for each
case
1. We encode and decode the word "conversation" in the same code
2. Connect the Arduino to the computer and encrypt and decrypt the written files
3. A code that encrypts and decrypts a password